Piping Connection; Additional Charge - Acson international B Serie Manual De Instalación

Piping Connection

• Do not use contaminated or damaged copper tubing. If any piping, evaporator or condenser had been exposed or had been
opened for 15 seconds or more, then vacuum and purge with field supplied refrigerant. Generally, do not remove plastic,
rubber plugs and brass nuts from the valves, fittings, tubing and coils until it is ready to connect suction or liquid line into
valves or fittings.
• If any brazing work is required, ensure that nitrogen gas is passed through coil and joints while the brazing work is being
done. This will eliminate soot formation on the inside wall of copper tubings.
• Cut the pipe stages by stages, advancing the blade of pipe cutter slowly. Extra force and a deep cut will cause more
distortion of pipe and therefore extra burr.
• Remove burrs from cut edges of pipes with a remover. This will avoid unevenness on the flare face which will cause gas
leak.
• Align the center of the piping and sufficiently tighten the flare nut with fingers. Finally, tighten the flare nut with torque
wrench until the wrench clicks.
• Be sure to execute heat insulation. (polyurethane form with thickness more than 15 mm)
• Except the outdoor unit which is pre-charge with refrigerant R22, the indoor unit and the refrigerant connection pipes must
be purged because the air that contain moisture remaining in the refrigerant cycle may cause malfunction to the compres-
sor.

Additional Charge

The refrigerant is pre-charged in the outdoor unit, but additional charge of refrigerant after vacuuming is necessary. Follow
the recommendation as tabulated below.
Cooling Only (R22 / R407C)
Indoor
Model
Outdoor
L <= 5 m
L = 7 m
L = 10 m
L = 15 m
L = 20 m
Heat Pump (R22 / R407C)
Indoor
Model
Outdoor
L <= 5 m
L = 7 m
L = 10 m
L = 15 m
L = 20 m
Cooling Only (R410A)
Model
L <= 5 m
L = 7 m
L = 10 m
L = 15 m
L = 20 m
Heat Pump (R410A)
Model
L <= 5 m
L = 7 m
L = 10 m
L = 15 m
L = 20 m
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CK15B CK20B
SL15B SL20B
0.250 kg 0.250 kg
0.300 kg 0.280 kg
0.325 kg 0.325 kg
0.400 kg 0.400 kg
– –
CK15B
SL15BR
–
0.050 kg
0.075 kg
0.150 kg
–
CK15B CK20B
0.225 kg 0.225 kg
0.270 kg 0.252 kg
0.293 kg 0.293 kg
0.360 kg 0.360 kg
– –
CK15BR
–
0.045 kg
0.068 kg
0.135 kg
–
1-7
CK25B CK30B
SL25B SL30B
0.100 kg 0.100 kg
0.176 kg 0.200 kg
0.290 kg 0.350 kg
0.480 kg 0.600 kg
– 0.850 kg
CK20BR CK25BR
SL20BR SL25BR
– –
0.050 kg 0.100 kg
0.075 kg 0.500 kg
0.150 kg 0.750 kg
– –
CK25B CK30B
0.090 kg 0.090 kg
0.159 kg 0.180 kg
0.261 kg 0.315 kg
0.432 kg 0.541 kg
– 0.766 kg
CK20BR CK25BR
– –
0.045 kg 0.090 kg
0.068 kg 0.450 kg
0.135 kg 0.676 kg
– –
CK30B
SL30C
0.400 kg
0.600 kg
0.650 kg
0.900 kg
1.150 kg
CK30BR
SL30CR
–
0.100 kg
0.250 kg
0.500 kg
0.750 kg
CK30B
0.360 kg
0.541 kg
0.586 kg
0.811 kg
1.036 kg
CK30BR
–
0.090 kg
0.225 kg
0.450 kg
0.676 kg